College Algebra / Unit 6 Alg 333 short lesson, about 20 seconds
Zeros, x-Intercepts, Solutions
Captions available
The idea
One object wears three role-fixed names — zero of the function, x-intercept of the graph, solution of f(x) = 0 — and the discriminant counts them.
In practice
x² − 4x + 3 factors as (x − 1)(x − 3): zeros 1 and 3, intercepts to match, discriminant 4 as promised.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
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